-95.8% is the change from 667 to 28
Calculation steps:
[( 28 - 667 ) ÷ 667] x 100 = -95.8%
Formula
Percentage change = [(28 - 667) / 667] x 100
Subtract the new number by the original number
28 - 667 = -639
-639 ÷ 667 = -0.9580209895052474
-0.9580209895052474 x 100 = -95.8%