254.44% is the change from 270 to 957
Calculation steps:
[( 957 - 270 ) ÷ 270] x 100 = 254.44%
Formula
Percentage change = [(957 - 270) / 270] x 100
Subtract the new number by the original number
957 - 270 = 687
687 ÷ 270 = 2.5444444444444443
2.5444444444444443 x 100 = 254.44%