-66.43% is the change from 849 to 285
Calculation steps:
[( 285 - 849 ) ÷ 849] x 100 = -66.43%
Formula
Percentage change = [(285 - 849) / 849] x 100
Subtract the new number by the original number
285 - 849 = -564
-564 ÷ 849 = -0.6643109540636042
-0.6643109540636042 x 100 = -66.43%