97.78% is the change from 270 to 534
Calculation steps:
[( 534 - 270 ) ÷ 270] x 100 = 97.78%
Formula
Percentage change = [(534 - 270) / 270] x 100
Subtract the new number by the original number
534 - 270 = 264
264 ÷ 270 = 0.9777777777777777
0.9777777777777777 x 100 = 97.78%