-85.92% is the change from 71 to 10
Calculation steps:
[( 10 - 71 ) ÷ 71] x 100 = -85.92%
Formula
Percentage change = [(10 - 71) / 71] x 100
Subtract the new number by the original number
10 - 71 = -61
-61 ÷ 71 = -0.8591549295774648
-0.8591549295774648 x 100 = -85.92%