3000% is the change from 10 to 310
Calculation steps:
[( 310 - 10 ) ÷ 10] x 100 = 3000%
Formula
Percentage change = [(310 - 10) / 10] x 100
Subtract the new number by the original number
310 - 10 = 300
300 ÷ 10 = 30
30 x 100 = 3000%
Example