-82.01% is the change from 806 to 145
Calculation steps:
[( 145 - 806 ) ÷ 806] x 100 = -82.01%
Formula
Percentage change = [(145 - 806) / 806] x 100
Subtract the new number by the original number
145 - 806 = -661
-661 ÷ 806 = -0.8200992555831266
-0.8200992555831266 x 100 = -82.01%