3270% is the change from 20 to 674
Calculation steps:
[( 674 - 20 ) ÷ 20] x 100 = 3270%
Formula
Percentage change = [(674 - 20) / 20] x 100
Subtract the new number by the original number
674 - 20 = 654
654 ÷ 20 = 32.7
32.7 x 100 = 3270%
Example