-96.12% is the change from 670 to 26
Calculation steps:
[( 26 - 670 ) ÷ 670] x 100 = -96.12%
Formula
Percentage change = [(26 - 670) / 670] x 100
Subtract the new number by the original number
26 - 670 = -644
-644 ÷ 670 = -0.9611940298507463
-0.9611940298507463 x 100 = -96.12%