4373.68% is the change from 19 to 850
Calculation steps:
[( 850 - 19 ) ÷ 19] x 100 = 4373.68%
Formula
Percentage change = [(850 - 19) / 19] x 100
Subtract the new number by the original number
850 - 19 = 831
831 ÷ 19 = 43.73684210526316
43.73684210526316 x 100 = 4373.68%