41.45% is the change from 456 to 645
Calculation steps:
[( 645 - 456 ) ÷ 456] x 100 = 41.45%
Formula
Percentage change = [(645 - 456) / 456] x 100
Subtract the new number by the original number
645 - 456 = 189
189 ÷ 456 = 0.4144736842105263
0.4144736842105263 x 100 = 41.45%