-22.08% is the change from 847 to 660
Calculation steps:
[( 660 - 847 ) ÷ 847] x 100 = -22.08%
Formula
Percentage change = [(660 - 847) / 847] x 100
Subtract the new number by the original number
660 - 847 = -187
-187 ÷ 847 = -0.22077922077922077
-0.22077922077922077 x 100 = -22.08%