64.37% is the change from 421 to 692
Calculation steps:
[( 692 - 421 ) ÷ 421] x 100 = 64.37%
Formula
Percentage change = [(692 - 421) / 421] x 100
Subtract the new number by the original number
692 - 421 = 271
271 ÷ 421 = 0.6437054631828979
0.6437054631828979 x 100 = 64.37%