64.52% is the change from 420 to 691
Calculation steps:
[( 691 - 420 ) ÷ 420] x 100 = 64.52%
Formula
Percentage change = [(691 - 420) / 420] x 100
Subtract the new number by the original number
691 - 420 = 271
271 ÷ 420 = 0.6452380952380953
0.6452380952380953 x 100 = 64.52%