-1.41% is the change from 850 to 838
Calculation steps:
[( 838 - 850 ) ÷ 850] x 100 = -1.41%
Formula
Percentage change = [(838 - 850) / 850] x 100
Subtract the new number by the original number
838 - 850 = -12
-12 ÷ 850 = -0.01411764705882353
-0.01411764705882353 x 100 = -1.41%