-84.44% is the change from 450 to 70
Calculation steps:
[( 70 - 450 ) ÷ 450] x 100 = -84.44%
Formula
Percentage change = [(70 - 450) / 450] x 100
Subtract the new number by the original number
70 - 450 = -380
-380 ÷ 450 = -0.8444444444444444
-0.8444444444444444 x 100 = -84.44%