-78.06% is the change from 939 to 206
Calculation steps:
[( 206 - 939 ) ÷ 939] x 100 = -78.06%
Formula
Percentage change = [(206 - 939) / 939] x 100
Subtract the new number by the original number
206 - 939 = -733
-733 ÷ 939 = -0.7806176783812566
-0.7806176783812566 x 100 = -78.06%