25.12% is the change from 402 to 503
Calculation steps:
[( 503 - 402 ) ÷ 402] x 100 = 25.12%
Formula
Percentage change = [(503 - 402) / 402] x 100
Subtract the new number by the original number
503 - 402 = 101
101 ÷ 402 = 0.2512437810945274
0.2512437810945274 x 100 = 25.12%