-11.51% is the change from 938 to 830
Calculation steps:
[( 830 - 938 ) ÷ 938] x 100 = -11.51%
Formula
Percentage change = [(830 - 938) / 938] x 100
Subtract the new number by the original number
830 - 938 = -108
-108 ÷ 938 = -0.11513859275053305
-0.11513859275053305 x 100 = -11.51%