3775% is the change from 20 to 775
Calculation steps:
[( 775 - 20 ) ÷ 20] x 100 = 3775%
Formula
Percentage change = [(775 - 20) / 20] x 100
Subtract the new number by the original number
775 - 20 = 755
755 ÷ 20 = 37.75
37.75 x 100 = 3775%
Example