8.31% is the change from 866 to 938
Calculation steps:
[( 938 - 866 ) ÷ 866] x 100 = 8.31%
Formula
Percentage change = [(938 - 866) / 866] x 100
Subtract the new number by the original number
938 - 866 = 72
72 ÷ 866 = 0.08314087759815242
0.08314087759815242 x 100 = 8.31%