-90.77% is the change from 834 to 77
Calculation steps:
[( 77 - 834 ) ÷ 834] x 100 = -90.77%
Formula
Percentage change = [(77 - 834) / 834] x 100
Subtract the new number by the original number
77 - 834 = -757
-757 ÷ 834 = -0.907673860911271
-0.907673860911271 x 100 = -90.77%