2000% is the change from 10 to 210
Calculation steps:
[( 210 - 10 ) ÷ 10] x 100 = 2000%
Formula
Percentage change = [(210 - 10) / 10] x 100
Subtract the new number by the original number
210 - 10 = 200
200 ÷ 10 = 20
20 x 100 = 2000%
Example