95.72% is the change from 257 to 503
Calculation steps:
[( 503 - 257 ) ÷ 257] x 100 = 95.72%
Formula
Percentage change = [(503 - 257) / 257] x 100
Subtract the new number by the original number
503 - 257 = 246
246 ÷ 257 = 0.9571984435797666
0.9571984435797666 x 100 = 95.72%