1411.76% is the change from 17 to 257
Calculation steps:
[( 257 - 17 ) ÷ 17] x 100 = 1411.76%
Formula
Percentage change = [(257 - 17) / 17] x 100
Subtract the new number by the original number
257 - 17 = 240
240 ÷ 17 = 14.117647058823529
14.117647058823529 x 100 = 1411.76%