According to Fitch Ratings, the "crisis will cut growth in credit this year by 50 percent as financial firms reduce leverage, investors' appetite for risk declines, and the worldwide economy slows." When credit is less available, there's less business activity and the economy slows. Unemployment goes up and quarterly earnings go down. It's a vicious circle that starts with speculation and ends in panic. The financial system has to reestablish its equilibrium by purging the excessive credit that developed through low interest rates and lax lending standards. Financial institutions everywhere are in the process of deleveraging which is putting downward pressure on the main stock indexes and creating turmoil in the currency markets.