-97.9% is the change from 667 to 14
Calculation steps:
[( 14 - 667 ) ÷ 667] x 100 = -97.9%
Formula
Percentage change = [(14 - 667) / 667] x 100
Subtract the new number by the original number
14 - 667 = -653
-653 ÷ 667 = -0.9790104947526237
-0.9790104947526237 x 100 = -97.9%