1876.19% is the change from 21 to 415
Calculation steps:
[( 415 - 21 ) ÷ 21] x 100 = 1876.19%
Formula
Percentage change = [(415 - 21) / 21] x 100
Subtract the new number by the original number
415 - 21 = 394
394 ÷ 21 = 18.761904761904763
18.761904761904763 x 100 = 1876.19%