-59.91% is the change from 227 to 91
Calculation steps:
[( 91 - 227 ) ÷ 227] x 100 = -59.91%
Formula
Percentage change = [(91 - 227) / 227] x 100
Subtract the new number by the original number
91 - 227 = -136
-136 ÷ 227 = -0.5991189427312775
-0.5991189427312775 x 100 = -59.91%