-49.59% is the change from 849 to 428
Calculation steps:
[( 428 - 849 ) ÷ 849] x 100 = -49.59%
Formula
Percentage change = [(428 - 849) / 849] x 100
Subtract the new number by the original number
428 - 849 = -421
-421 ÷ 849 = -0.4958775029446408
-0.4958775029446408 x 100 = -49.59%