-85.67% is the change from 670 to 96
Calculation steps:
[( 96 - 670 ) ÷ 670] x 100 = -85.67%
Formula
Percentage change = [(96 - 670) / 670] x 100
Subtract the new number by the original number
96 - 670 = -574
-574 ÷ 670 = -0.8567164179104477
-0.8567164179104477 x 100 = -85.67%