-86.77% is the change from 529 to 70
Calculation steps:
[( 70 - 529 ) ÷ 529] x 100 = -86.77%
Formula
Percentage change = [(70 - 529) / 529] x 100
Subtract the new number by the original number
70 - 529 = -459
-459 ÷ 529 = -0.8676748582230623
-0.8676748582230623 x 100 = -86.77%