91.11% is the change from 270 to 516
Calculation steps:
[( 516 - 270 ) ÷ 270] x 100 = 91.11%
Formula
Percentage change = [(516 - 270) / 270] x 100
Subtract the new number by the original number
516 - 270 = 246
246 ÷ 270 = 0.9111111111111111
0.9111111111111111 x 100 = 91.11%