-73.06% is the change from 798 to 215
Calculation steps:
[( 215 - 798 ) ÷ 798] x 100 = -73.06%
Formula
Percentage change = [(215 - 798) / 798] x 100
Subtract the new number by the original number
215 - 798 = -583
-583 ÷ 798 = -0.7305764411027569
-0.7305764411027569 x 100 = -73.06%