21.59% is the change from 528 to 642
Calculation steps:
[( 642 - 528 ) ÷ 528] x 100 = 21.59%
Formula
Percentage change = [(642 - 528) / 528] x 100
Subtract the new number by the original number
642 - 528 = 114
114 ÷ 528 = 0.2159090909090909
0.2159090909090909 x 100 = 21.59%
Example