-49.24% is the change from 197 to 100
Calculation steps:
[( 100 - 197 ) ÷ 197] x 100 = -49.24%
Formula
Percentage change = [(100 - 197) / 197] x 100
Subtract the new number by the original number
100 - 197 = -97
-97 ÷ 197 = -0.49238578680203043
-0.49238578680203043 x 100 = -49.24%