53.23% is the change from 263 to 403
Calculation steps:
[( 403 - 263 ) ÷ 263] x 100 = 53.23%
Formula
Percentage change = [(403 - 263) / 263] x 100
Subtract the new number by the original number
403 - 263 = 140
140 ÷ 263 = 0.532319391634981
0.532319391634981 x 100 = 53.23%