-75.09% is the change from 863 to 215
Calculation steps:
[( 215 - 863 ) ÷ 863] x 100 = -75.09%
Formula
Percentage change = [(215 - 863) / 863] x 100
Subtract the new number by the original number
215 - 863 = -648
-648 ÷ 863 = -0.7508690614136733
-0.7508690614136733 x 100 = -75.09%