24.15% is the change from 207 to 257
Calculation steps:
[( 257 - 207 ) ÷ 207] x 100 = 24.15%
Formula
Percentage change = [(257 - 207) / 207] x 100
Subtract the new number by the original number
257 - 207 = 50
50 ÷ 207 = 0.24154589371980675
0.24154589371980675 x 100 = 24.15%