-37.07% is the change from 866 to 545
Calculation steps:
[( 545 - 866 ) ÷ 866] x 100 = -37.07%
Formula
Percentage change = [(545 - 866) / 866] x 100
Subtract the new number by the original number
545 - 866 = -321
-321 ÷ 866 = -0.37066974595842955
-0.37066974595842955 x 100 = -37.07%