-78.92% is the change from 977 to 206
Calculation steps:
[( 206 - 977 ) ÷ 977] x 100 = -78.92%
Formula
Percentage change = [(206 - 977) / 977] x 100
Subtract the new number by the original number
206 - 977 = -771
-771 ÷ 977 = -0.789150460593654
-0.789150460593654 x 100 = -78.92%