-55.41% is the change from 666 to 297
Calculation steps:
[( 297 - 666 ) ÷ 666] x 100 = -55.41%
Formula
Percentage change = [(297 - 666) / 666] x 100
Subtract the new number by the original number
297 - 666 = -369
-369 ÷ 666 = -0.5540540540540541
-0.5540540540540541 x 100 = -55.41%