95.33% is the change from 257 to 502
Calculation steps:
[( 502 - 257 ) ÷ 257] x 100 = 95.33%
Formula
Percentage change = [(502 - 257) / 257] x 100
Subtract the new number by the original number
502 - 257 = 245
245 ÷ 257 = 0.953307392996109
0.953307392996109 x 100 = 95.33%