-58.06% is the change from 217 to 91
Calculation steps:
[( 91 - 217 ) ÷ 217] x 100 = -58.06%
Formula
Percentage change = [(91 - 217) / 217] x 100
Subtract the new number by the original number
91 - 217 = -126
-126 ÷ 217 = -0.5806451612903226
-0.5806451612903226 x 100 = -58.06%