257% is the change from 100 to 357
Calculation steps:
[( 357 - 100 ) ÷ 100] x 100 = 257%
Formula
Percentage change = [(357 - 100) / 100] x 100
Subtract the new number by the original number
357 - 100 = 257
257 ÷ 100 = 2.57
2.57 x 100 = 257%
Example