1475% is the change from 20 to 315
Calculation steps:
[( 315 - 20 ) ÷ 20] x 100 = 1475%
Formula
Percentage change = [(315 - 20) / 20] x 100
Subtract the new number by the original number
315 - 20 = 295
295 ÷ 20 = 14.75
14.75 x 100 = 1475%
Example