-91.56% is the change from 829 to 70
Calculation steps:
[( 70 - 829 ) ÷ 829] x 100 = -91.56%
Formula
Percentage change = [(70 - 829) / 829] x 100
Subtract the new number by the original number
70 - 829 = -759
-759 ÷ 829 = -0.9155609167671894
-0.9155609167671894 x 100 = -91.56%