-83.58% is the change from 670 to 110
Calculation steps:
[( 110 - 670 ) ÷ 670] x 100 = -83.58%
Formula
Percentage change = [(110 - 670) / 670] x 100
Subtract the new number by the original number
110 - 670 = -560
-560 ÷ 670 = -0.835820895522388
-0.835820895522388 x 100 = -83.58%