-51.64% is the change from 457 to 221
Calculation steps:
[( 221 - 457 ) ÷ 457] x 100 = -51.64%
Formula
Percentage change = [(221 - 457) / 457] x 100
Subtract the new number by the original number
221 - 457 = -236
-236 ÷ 457 = -0.5164113785557987
-0.5164113785557987 x 100 = -51.64%