80.24% is the change from 420 to 757
Calculation steps:
[( 757 - 420 ) ÷ 420] x 100 = 80.24%
Formula
Percentage change = [(757 - 420) / 420] x 100
Subtract the new number by the original number
757 - 420 = 337
337 ÷ 420 = 0.8023809523809524
0.8023809523809524 x 100 = 80.24%