-56.43% is the change from 902 to 393
Calculation steps:
[( 393 - 902 ) ÷ 902] x 100 = -56.43%
Formula
Percentage change = [(393 - 902) / 902] x 100
Subtract the new number by the original number
393 - 902 = -509
-509 ÷ 902 = -0.5643015521064302
-0.5643015521064302 x 100 = -56.43%