251.48% is the change from 270 to 949
Calculation steps:
[( 949 - 270 ) ÷ 270] x 100 = 251.48%
Formula
Percentage change = [(949 - 270) / 270] x 100
Subtract the new number by the original number
949 - 270 = 679
679 ÷ 270 = 2.5148148148148146
2.5148148148148146 x 100 = 251.48%