49.63% is the change from 409 to 612
Calculation steps:
[( 612 - 409 ) ÷ 409] x 100 = 49.63%
Formula
Percentage change = [(612 - 409) / 409] x 100
Subtract the new number by the original number
612 - 409 = 203
203 ÷ 409 = 0.4963325183374083
0.4963325183374083 x 100 = 49.63%