200% is the change from 207 to 621
Calculation steps:
[( 621 - 207 ) ÷ 207] x 100 = 200%
Formula
Percentage change = [(621 - 207) / 207] x 100
Subtract the new number by the original number
621 - 207 = 414
414 ÷ 207 = 2
2 x 100 = 200%
Example