-86.14% is the change from 505 to 70
Calculation steps:
[( 70 - 505 ) ÷ 505] x 100 = -86.14%
Formula
Percentage change = [(70 - 505) / 505] x 100
Subtract the new number by the original number
70 - 505 = -435
-435 ÷ 505 = -0.8613861386138614
-0.8613861386138614 x 100 = -86.14%