57.21% is the change from 423 to 665
Calculation steps:
[( 665 - 423 ) ÷ 423] x 100 = 57.21%
Formula
Percentage change = [(665 - 423) / 423] x 100
Subtract the new number by the original number
665 - 423 = 242
242 ÷ 423 = 0.5721040189125296
0.5721040189125296 x 100 = 57.21%