-13.48% is the change from 942 to 815
Calculation steps:
[( 815 - 942 ) ÷ 942] x 100 = -13.48%
Formula
Percentage change = [(815 - 942) / 942] x 100
Subtract the new number by the original number
815 - 942 = -127
-127 ÷ 942 = -0.13481953290870488
-0.13481953290870488 x 100 = -13.48%