59.76% is the change from 420 to 671
Calculation steps:
[( 671 - 420 ) ÷ 420] x 100 = 59.76%
Formula
Percentage change = [(671 - 420) / 420] x 100
Subtract the new number by the original number
671 - 420 = 251
251 ÷ 420 = 0.5976190476190476
0.5976190476190476 x 100 = 59.76%