-91.84% is the change from 821 to 67
Calculation steps:
[( 67 - 821 ) ÷ 821] x 100 = -91.84%
Formula
Percentage change = [(67 - 821) / 821] x 100
Subtract the new number by the original number
67 - 821 = -754
-754 ÷ 821 = -0.9183922046285018
-0.9183922046285018 x 100 = -91.84%