-91.92% is the change from 866 to 70
Calculation steps:
[( 70 - 866 ) ÷ 866] x 100 = -91.92%
Formula
Percentage change = [(70 - 866) / 866] x 100
Subtract the new number by the original number
70 - 866 = -796
-796 ÷ 866 = -0.9191685912240185
-0.9191685912240185 x 100 = -91.92%