257.78% is the change from 270 to 966
Calculation steps:
[( 966 - 270 ) ÷ 270] x 100 = 257.78%
Formula
Percentage change = [(966 - 270) / 270] x 100
Subtract the new number by the original number
966 - 270 = 696
696 ÷ 270 = 2.577777777777778
2.577777777777778 x 100 = 257.78%