-84.26% is the change from 197 to 31
Calculation steps:
[( 31 - 197 ) ÷ 197] x 100 = -84.26%
Formula
Percentage change = [(31 - 197) / 197] x 100
Subtract the new number by the original number
31 - 197 = -166
-166 ÷ 197 = -0.8426395939086294
-0.8426395939086294 x 100 = -84.26%