-58.14% is the change from 528 to 221
Calculation steps:
[( 221 - 528 ) ÷ 528] x 100 = -58.14%
Formula
Percentage change = [(221 - 528) / 528] x 100
Subtract the new number by the original number
221 - 528 = -307
-307 ÷ 528 = -0.5814393939393939
-0.5814393939393939 x 100 = -58.14%