76.3% is the change from 270 to 476
Calculation steps:
[( 476 - 270 ) ÷ 270] x 100 = 76.3%
Formula
Percentage change = [(476 - 270) / 270] x 100
Subtract the new number by the original number
476 - 270 = 206
206 ÷ 270 = 0.762962962962963
0.762962962962963 x 100 = 76.3%