-82.2% is the change from 837 to 149
Calculation steps:
[( 149 - 837 ) ÷ 837] x 100 = -82.2%
Formula
Percentage change = [(149 - 837) / 837] x 100
Subtract the new number by the original number
149 - 837 = -688
-688 ÷ 837 = -0.8219832735961768
-0.8219832735961768 x 100 = -82.2%