-1.9% is the change from 843 to 827
Calculation steps:
[( 827 - 843 ) ÷ 843] x 100 = -1.9%
Formula
Percentage change = [(827 - 843) / 843] x 100
Subtract the new number by the original number
827 - 843 = -16
-16 ÷ 843 = -0.018979833926453145
-0.018979833926453145 x 100 = -1.9%