347.37% is the change from 57 to 255
Calculation steps:
[( 255 - 57 ) ÷ 57] x 100 = 347.37%
Formula
Percentage change = [(255 - 57) / 57] x 100
Subtract the new number by the original number
255 - 57 = 198
198 ÷ 57 = 3.473684210526316
3.473684210526316 x 100 = 347.37%