-87.7% is the change from 569 to 70
Calculation steps:
[( 70 - 569 ) ÷ 569] x 100 = -87.7%
Formula
Percentage change = [(70 - 569) / 569] x 100
Subtract the new number by the original number
70 - 569 = -499
-499 ÷ 569 = -0.8769771528998243
-0.8769771528998243 x 100 = -87.7%