4447.37% is the change from 19 to 864
Calculation steps:
[( 864 - 19 ) ÷ 19] x 100 = 4447.37%
Formula
Percentage change = [(864 - 19) / 19] x 100
Subtract the new number by the original number
864 - 19 = 845
845 ÷ 19 = 44.473684210526315
44.473684210526315 x 100 = 4447.37%