61.11% is the change from 270 to 435
Calculation steps:
[( 435 - 270 ) ÷ 270] x 100 = 61.11%
Formula
Percentage change = [(435 - 270) / 270] x 100
Subtract the new number by the original number
435 - 270 = 165
165 ÷ 270 = 0.6111111111111112
0.6111111111111112 x 100 = 61.11%