-76.96% is the change from 690 to 159
Calculation steps:
[( 159 - 690 ) ÷ 690] x 100 = -76.96%
Formula
Percentage change = [(159 - 690) / 690] x 100
Subtract the new number by the original number
159 - 690 = -531
-531 ÷ 690 = -0.7695652173913043
-0.7695652173913043 x 100 = -76.96%