-49.88% is the change from 854 to 428
Calculation steps:
[( 428 - 854 ) ÷ 854] x 100 = -49.88%
Formula
Percentage change = [(428 - 854) / 854] x 100
Subtract the new number by the original number
428 - 854 = -426
-426 ÷ 854 = -0.49882903981264637
-0.49882903981264637 x 100 = -49.88%