-68.8% is the change from 689 to 215
Calculation steps:
[( 215 - 689 ) ÷ 689] x 100 = -68.8%
Formula
Percentage change = [(215 - 689) / 689] x 100
Subtract the new number by the original number
215 - 689 = -474
-474 ÷ 689 = -0.6879535558780842
-0.6879535558780842 x 100 = -68.8%