-68.26% is the change from 838 to 266
Calculation steps:
[( 266 - 838 ) ÷ 838] x 100 = -68.26%
Formula
Percentage change = [(266 - 838) / 838] x 100
Subtract the new number by the original number
266 - 838 = -572
-572 ÷ 838 = -0.6825775656324582
-0.6825775656324582 x 100 = -68.26%