217.5% is the change from 200 to 635
Calculation steps:
[( 635 - 200 ) ÷ 200] x 100 = 217.5%
Formula
Percentage change = [(635 - 200) / 200] x 100
Subtract the new number by the original number
635 - 200 = 435
435 ÷ 200 = 2.175
2.175 x 100 = 217.5%
Example