210% is the change from 210 to 651
Calculation steps:
[( 651 - 210 ) ÷ 210] x 100 = 210%
Formula
Percentage change = [(651 - 210) / 210] x 100
Subtract the new number by the original number
651 - 210 = 441
441 ÷ 210 = 2.1
2.1 x 100 = 210%
Example