-84.09% is the change from 440 to 70
Calculation steps:
[( 70 - 440 ) ÷ 440] x 100 = -84.09%
Formula
Percentage change = [(70 - 440) / 440] x 100
Subtract the new number by the original number
70 - 440 = -370
-370 ÷ 440 = -0.8409090909090909
-0.8409090909090909 x 100 = -84.09%