-76.12% is the change from 670 to 160
Calculation steps:
[( 160 - 670 ) ÷ 670] x 100 = -76.12%
Formula
Percentage change = [(160 - 670) / 670] x 100
Subtract the new number by the original number
160 - 670 = -510
-510 ÷ 670 = -0.7611940298507462
-0.7611940298507462 x 100 = -76.12%