65.93% is the change from 270 to 448
Calculation steps:
[( 448 - 270 ) ÷ 270] x 100 = 65.93%
Formula
Percentage change = [(448 - 270) / 270] x 100
Subtract the new number by the original number
448 - 270 = 178
178 ÷ 270 = 0.6592592592592592
0.6592592592592592 x 100 = 65.93%