-11.3% is the change from 177 to 157
Calculation steps:
[( 157 - 177 ) ÷ 177] x 100 = -11.3%
Formula
Percentage change = [(157 - 177) / 177] x 100
Subtract the new number by the original number
157 - 177 = -20
-20 ÷ 177 = -0.11299435028248588
-0.11299435028248588 x 100 = -11.3%