-77.4% is the change from 823 to 186
Calculation steps:
[( 186 - 823 ) ÷ 823] x 100 = -77.4%
Formula
Percentage change = [(186 - 823) / 823] x 100
Subtract the new number by the original number
186 - 823 = -637
-637 ÷ 823 = -0.7739975698663426
-0.7739975698663426 x 100 = -77.4%