69.52% is the change from 420 to 712
Calculation steps:
[( 712 - 420 ) ÷ 420] x 100 = 69.52%
Formula
Percentage change = [(712 - 420) / 420] x 100
Subtract the new number by the original number
712 - 420 = 292
292 ÷ 420 = 0.6952380952380952
0.6952380952380952 x 100 = 69.52%