-82.76% is the change from 406 to 70
Calculation steps:
[( 70 - 406 ) ÷ 406] x 100 = -82.76%
Formula
Percentage change = [(70 - 406) / 406] x 100
Subtract the new number by the original number
70 - 406 = -336
-336 ÷ 406 = -0.8275862068965517
-0.8275862068965517 x 100 = -82.76%