-77.6% is the change from 960 to 215
Calculation steps:
[( 215 - 960 ) ÷ 960] x 100 = -77.6%
Formula
Percentage change = [(215 - 960) / 960] x 100
Subtract the new number by the original number
215 - 960 = -745
-745 ÷ 960 = -0.7760416666666666
-0.7760416666666666 x 100 = -77.6%