-50.76% is the change from 197 to 97
Calculation steps:
[( 97 - 197 ) ÷ 197] x 100 = -50.76%
Formula
Percentage change = [(97 - 197) / 197] x 100
Subtract the new number by the original number
97 - 197 = -100
-100 ÷ 197 = -0.5076142131979695
-0.5076142131979695 x 100 = -50.76%