-59.76% is the change from 666 to 268
Calculation steps:
[( 268 - 666 ) ÷ 666] x 100 = -59.76%
Formula
Percentage change = [(268 - 666) / 666] x 100
Subtract the new number by the original number
268 - 666 = -398
-398 ÷ 666 = -0.5975975975975976
-0.5975975975975976 x 100 = -59.76%