240.37% is the change from 270 to 919
Calculation steps:
[( 919 - 270 ) ÷ 270] x 100 = 240.37%
Formula
Percentage change = [(919 - 270) / 270] x 100
Subtract the new number by the original number
919 - 270 = 649
649 ÷ 270 = 2.403703703703704
2.403703703703704 x 100 = 240.37%