94.94% is the change from 257 to 501
Calculation steps:
[( 501 - 257 ) ÷ 257] x 100 = 94.94%
Formula
Percentage change = [(501 - 257) / 257] x 100
Subtract the new number by the original number
501 - 257 = 244
244 ÷ 257 = 0.9494163424124513
0.9494163424124513 x 100 = 94.94%