-89.63% is the change from 675 to 70
Calculation steps:
[( 70 - 675 ) ÷ 675] x 100 = -89.63%
Formula
Percentage change = [(70 - 675) / 675] x 100
Subtract the new number by the original number
70 - 675 = -605
-605 ÷ 675 = -0.8962962962962963
-0.8962962962962963 x 100 = -89.63%