-77.18% is the change from 837 to 191
Calculation steps:
[( 191 - 837 ) ÷ 837] x 100 = -77.18%
Formula
Percentage change = [(191 - 837) / 837] x 100
Subtract the new number by the original number
191 - 837 = -646
-646 ÷ 837 = -0.7718040621266428
-0.7718040621266428 x 100 = -77.18%