3740% is the change from 20 to 768
Calculation steps:
[( 768 - 20 ) ÷ 20] x 100 = 3740%
Formula
Percentage change = [(768 - 20) / 20] x 100
Subtract the new number by the original number
768 - 20 = 748
748 ÷ 20 = 37.4
37.4 x 100 = 3740%
Example