255% is the change from 200 to 710
Calculation steps:
[( 710 - 200 ) ÷ 200] x 100 = 255%
Formula
Percentage change = [(710 - 200) / 200] x 100
Subtract the new number by the original number
710 - 200 = 510
510 ÷ 200 = 2.55
2.55 x 100 = 255%
Example