-92.97% is the change from 939 to 66
Calculation steps:
[( 66 - 939 ) ÷ 939] x 100 = -92.97%
Formula
Percentage change = [(66 - 939) / 939] x 100
Subtract the new number by the original number
66 - 939 = -873
-873 ÷ 939 = -0.9297124600638977
-0.9297124600638977 x 100 = -92.97%