-86.03% is the change from 501 to 70
Calculation steps:
[( 70 - 501 ) ÷ 501] x 100 = -86.03%
Formula
Percentage change = [(70 - 501) / 501] x 100
Subtract the new number by the original number
70 - 501 = -431
-431 ÷ 501 = -0.8602794411177644
-0.8602794411177644 x 100 = -86.03%