-71.85% is the change from 817 to 230
Calculation steps:
[( 230 - 817 ) ÷ 817] x 100 = -71.85%
Formula
Percentage change = [(230 - 817) / 817] x 100
Subtract the new number by the original number
230 - 817 = -587
-587 ÷ 817 = -0.7184822521419829
-0.7184822521419829 x 100 = -71.85%