-90.8% is the change from 837 to 77
Calculation steps:
[( 77 - 837 ) ÷ 837] x 100 = -90.8%
Formula
Percentage change = [(77 - 837) / 837] x 100
Subtract the new number by the original number
77 - 837 = -760
-760 ÷ 837 = -0.9080047789725209
-0.9080047789725209 x 100 = -90.8%