-80.12% is the change from 815 to 162
Calculation steps:
[( 162 - 815 ) ÷ 815] x 100 = -80.12%
Formula
Percentage change = [(162 - 815) / 815] x 100
Subtract the new number by the original number
162 - 815 = -653
-653 ÷ 815 = -0.8012269938650307
-0.8012269938650307 x 100 = -80.12%