39.63% is the change from 270 to 377
Calculation steps:
[( 377 - 270 ) ÷ 270] x 100 = 39.63%
Formula
Percentage change = [(377 - 270) / 270] x 100
Subtract the new number by the original number
377 - 270 = 107
107 ÷ 270 = 0.3962962962962963
0.3962962962962963 x 100 = 39.63%