-44.17% is the change from 163 to 91
Calculation steps:
[( 91 - 163 ) ÷ 163] x 100 = -44.17%
Formula
Percentage change = [(91 - 163) / 163] x 100
Subtract the new number by the original number
91 - 163 = -72
-72 ÷ 163 = -0.44171779141104295
-0.44171779141104295 x 100 = -44.17%