218.5% is the change from 200 to 637
Calculation steps:
[( 637 - 200 ) ÷ 200] x 100 = 218.5%
Formula
Percentage change = [(637 - 200) / 200] x 100
Subtract the new number by the original number
637 - 200 = 437
437 ÷ 200 = 2.185
2.185 x 100 = 218.5%
Example