77.04% is the change from 270 to 478
Calculation steps:
[( 478 - 270 ) ÷ 270] x 100 = 77.04%
Formula
Percentage change = [(478 - 270) / 270] x 100
Subtract the new number by the original number
478 - 270 = 208
208 ÷ 270 = 0.7703703703703704
0.7703703703703704 x 100 = 77.04%