260% is the change from 210 to 756
Calculation steps:
[( 756 - 210 ) ÷ 210] x 100 = 260%
Formula
Percentage change = [(756 - 210) / 210] x 100
Subtract the new number by the original number
756 - 210 = 546
546 ÷ 210 = 2.6
2.6 x 100 = 260%
Example