-9.83% is the change from 661 to 596
Calculation steps:
[( 596 - 661 ) ÷ 661] x 100 = -9.83%
Formula
Percentage change = [(596 - 661) / 661] x 100
Subtract the new number by the original number
596 - 661 = -65
-65 ÷ 661 = -0.09833585476550681
-0.09833585476550681 x 100 = -9.83%