57.45% is the change from 423 to 666
Calculation steps:
[( 666 - 423 ) ÷ 423] x 100 = 57.45%
Formula
Percentage change = [(666 - 423) / 423] x 100
Subtract the new number by the original number
666 - 423 = 243
243 ÷ 423 = 0.574468085106383
0.574468085106383 x 100 = 57.45%