-84.48% is the change from 670 to 104
Calculation steps:
[( 104 - 670 ) ÷ 670] x 100 = -84.48%
Formula
Percentage change = [(104 - 670) / 670] x 100
Subtract the new number by the original number
104 - 670 = -566
-566 ÷ 670 = -0.844776119402985
-0.844776119402985 x 100 = -84.48%