-41.14% is the change from 666 to 392
Calculation steps:
[( 392 - 666 ) ÷ 666] x 100 = -41.14%
Formula
Percentage change = [(392 - 666) / 666] x 100
Subtract the new number by the original number
392 - 666 = -274
-274 ÷ 666 = -0.4114114114114114
-0.4114114114114114 x 100 = -41.14%