-87.99% is the change from 583 to 70
Calculation steps:
[( 70 - 583 ) ÷ 583] x 100 = -87.99%
Formula
Percentage change = [(70 - 583) / 583] x 100
Subtract the new number by the original number
70 - 583 = -513
-513 ÷ 583 = -0.8799313893653516
-0.8799313893653516 x 100 = -87.99%