-83.2% is the change from 863 to 145
Calculation steps:
[( 145 - 863 ) ÷ 863] x 100 = -83.2%
Formula
Percentage change = [(145 - 863) / 863] x 100
Subtract the new number by the original number
145 - 863 = -718
-718 ÷ 863 = -0.831981460023175
-0.831981460023175 x 100 = -83.2%