21.39% is the change from 402 to 488
Calculation steps:
[( 488 - 402 ) ÷ 402] x 100 = 21.39%
Formula
Percentage change = [(488 - 402) / 402] x 100
Subtract the new number by the original number
488 - 402 = 86
86 ÷ 402 = 0.21393034825870647
0.21393034825870647 x 100 = 21.39%