-50% is the change from 712 to 356
Calculation steps:
[( 356 - 712 ) ÷ 712] x 100 = -50%
Formula
Percentage change = [(356 - 712) / 712] x 100
Subtract the new number by the original number
356 - 712 = -356
-356 ÷ 712 = -0.5
-0.5 x 100 = -50%
Example