-72.27% is the change from 642 to 178
Calculation steps:
[( 178 - 642 ) ÷ 642] x 100 = -72.27%
Formula
Percentage change = [(178 - 642) / 642] x 100
Subtract the new number by the original number
178 - 642 = -464
-464 ÷ 642 = -0.7227414330218068
-0.7227414330218068 x 100 = -72.27%