-77.18% is the change from 942 to 215
Calculation steps:
[( 215 - 942 ) ÷ 942] x 100 = -77.18%
Formula
Percentage change = [(215 - 942) / 942] x 100
Subtract the new number by the original number
215 - 942 = -727
-727 ÷ 942 = -0.7717622080679406
-0.7717622080679406 x 100 = -77.18%