4750% is the change from 20 to 970
Calculation steps:
[( 970 - 20 ) ÷ 20] x 100 = 4750%
Formula
Percentage change = [(970 - 20) / 20] x 100
Subtract the new number by the original number
970 - 20 = 950
950 ÷ 20 = 47.5
47.5 x 100 = 4750%
Example