64.81% is the change from 270 to 445
Calculation steps:
[( 445 - 270 ) ÷ 270] x 100 = 64.81%
Formula
Percentage change = [(445 - 270) / 270] x 100
Subtract the new number by the original number
445 - 270 = 175
175 ÷ 270 = 0.6481481481481481
0.6481481481481481 x 100 = 64.81%