52.48% is the change from 423 to 645
Calculation steps:
[( 645 - 423 ) ÷ 423] x 100 = 52.48%
Formula
Percentage change = [(645 - 423) / 423] x 100
Subtract the new number by the original number
645 - 423 = 222
222 ÷ 423 = 0.524822695035461
0.524822695035461 x 100 = 52.48%