-20.81% is the change from 197 to 156
Calculation steps:
[( 156 - 197 ) ÷ 197] x 100 = -20.81%
Formula
Percentage change = [(156 - 197) / 197] x 100
Subtract the new number by the original number
156 - 197 = -41
-41 ÷ 197 = -0.20812182741116753
-0.20812182741116753 x 100 = -20.81%