-10.15% is the change from 197 to 177
Calculation steps:
[( 177 - 197 ) ÷ 197] x 100 = -10.15%
Formula
Percentage change = [(177 - 197) / 197] x 100
Subtract the new number by the original number
177 - 197 = -20
-20 ÷ 197 = -0.10152284263959391
-0.10152284263959391 x 100 = -10.15%