-97.99% is the change from 847 to 17
Calculation steps:
[( 17 - 847 ) ÷ 847] x 100 = -97.99%
Formula
Percentage change = [(17 - 847) / 847] x 100
Subtract the new number by the original number
17 - 847 = -830
-830 ÷ 847 = -0.9799291617473436
-0.9799291617473436 x 100 = -97.99%