-74.62% is the change from 197 to 50
Calculation steps:
[( 50 - 197 ) ÷ 197] x 100 = -74.62%
Formula
Percentage change = [(50 - 197) / 197] x 100
Subtract the new number by the original number
50 - 197 = -147
-147 ÷ 197 = -0.7461928934010152
-0.7461928934010152 x 100 = -74.62%