-98.01% is the change from 853 to 17
Calculation steps:
[( 17 - 853 ) ÷ 853] x 100 = -98.01%
Formula
Percentage change = [(17 - 853) / 853] x 100
Subtract the new number by the original number
17 - 853 = -836
-836 ÷ 853 = -0.9800703399765534
-0.9800703399765534 x 100 = -98.01%