-76.25% is the change from 661 to 157
Calculation steps:
[( 157 - 661 ) ÷ 661] x 100 = -76.25%
Formula
Percentage change = [(157 - 661) / 661] x 100
Subtract the new number by the original number
157 - 661 = -504
-504 ÷ 661 = -0.762481089258699
-0.762481089258699 x 100 = -76.25%