213.24% is the change from 204 to 639
Calculation steps:
[( 639 - 204 ) ÷ 204] x 100 = 213.24%
Formula
Percentage change = [(639 - 204) / 204] x 100
Subtract the new number by the original number
639 - 204 = 435
435 ÷ 204 = 2.1323529411764706
2.1323529411764706 x 100 = 213.24%