68.25% is the change from 252 to 424
Calculation steps:
[( 424 - 252 ) ÷ 252] x 100 = 68.25%
Formula
Percentage change = [(424 - 252) / 252] x 100
Subtract the new number by the original number
424 - 252 = 172
172 ÷ 252 = 0.6825396825396826
0.6825396825396826 x 100 = 68.25%