-20.73% is the change from 661 to 524
Calculation steps:
[( 524 - 661 ) ÷ 661] x 100 = -20.73%
Formula
Percentage change = [(524 - 661) / 661] x 100
Subtract the new number by the original number
524 - 661 = -137
-137 ÷ 661 = -0.20726172465960666
-0.20726172465960666 x 100 = -20.73%