2376.47% is the change from 17 to 421
Calculation steps:
[( 421 - 17 ) ÷ 17] x 100 = 2376.47%
Formula
Percentage change = [(421 - 17) / 17] x 100
Subtract the new number by the original number
421 - 17 = 404
404 ÷ 17 = 23.764705882352942
23.764705882352942 x 100 = 2376.47%