-97.45% is the change from 667 to 17
Calculation steps:
[( 17 - 667 ) ÷ 667] x 100 = -97.45%
Formula
Percentage change = [(17 - 667) / 667] x 100
Subtract the new number by the original number
17 - 667 = -650
-650 ÷ 667 = -0.974512743628186
-0.974512743628186 x 100 = -97.45%