1985% is the change from 20 to 417
Calculation steps:
[( 417 - 20 ) ÷ 20] x 100 = 1985%
Formula
Percentage change = [(417 - 20) / 20] x 100
Subtract the new number by the original number
417 - 20 = 397
397 ÷ 20 = 19.85
19.85 x 100 = 1985%
Example