-71.67% is the change from 939 to 266
Calculation steps:
[( 266 - 939 ) ÷ 939] x 100 = -71.67%
Formula
Percentage change = [(266 - 939) / 939] x 100
Subtract the new number by the original number
266 - 939 = -673
-673 ÷ 939 = -0.7167199148029819
-0.7167199148029819 x 100 = -71.67%