-76.88% is the change from 930 to 215
Calculation steps:
[( 215 - 930 ) ÷ 930] x 100 = -76.88%
Formula
Percentage change = [(215 - 930) / 930] x 100
Subtract the new number by the original number
215 - 930 = -715
-715 ÷ 930 = -0.7688172043010753
-0.7688172043010753 x 100 = -76.88%