1510% is the change from 20 to 322
Calculation steps:
[( 322 - 20 ) ÷ 20] x 100 = 1510%
Formula
Percentage change = [(322 - 20) / 20] x 100
Subtract the new number by the original number
322 - 20 = 302
302 ÷ 20 = 15.1
15.1 x 100 = 1510%
Example