64.07% is the change from 270 to 443
Calculation steps:
[( 443 - 270 ) ÷ 270] x 100 = 64.07%
Formula
Percentage change = [(443 - 270) / 270] x 100
Subtract the new number by the original number
443 - 270 = 173
173 ÷ 270 = 0.6407407407407407
0.6407407407407407 x 100 = 64.07%