-77.23% is the change from 817 to 186
Calculation steps:
[( 186 - 817 ) ÷ 817] x 100 = -77.23%
Formula
Percentage change = [(186 - 817) / 817] x 100
Subtract the new number by the original number
186 - 817 = -631
-631 ÷ 817 = -0.7723378212974297
-0.7723378212974297 x 100 = -77.23%