-61.76% is the change from 238 to 91
Calculation steps:
[( 91 - 238 ) ÷ 238] x 100 = -61.76%
Formula
Percentage change = [(91 - 238) / 238] x 100
Subtract the new number by the original number
91 - 238 = -147
-147 ÷ 238 = -0.6176470588235294
-0.6176470588235294 x 100 = -61.76%