100% is the change from 263 to 526
Calculation steps:
[( 526 - 263 ) ÷ 263] x 100 = 100%
Formula
Percentage change = [(526 - 263) / 263] x 100
Subtract the new number by the original number
526 - 263 = 263
263 ÷ 263 = 1
1 x 100 = 100%
Example