253.7% is the change from 270 to 955
Calculation steps:
[( 955 - 270 ) ÷ 270] x 100 = 253.7%
Formula
Percentage change = [(955 - 270) / 270] x 100
Subtract the new number by the original number
955 - 270 = 685
685 ÷ 270 = 2.537037037037037
2.537037037037037 x 100 = 253.7%