-40.91% is the change from 154 to 91
Calculation steps:
[( 91 - 154 ) ÷ 154] x 100 = -40.91%
Formula
Percentage change = [(91 - 154) / 154] x 100
Subtract the new number by the original number
91 - 154 = -63
-63 ÷ 154 = -0.4090909090909091
-0.4090909090909091 x 100 = -40.91%