-64.87% is the change from 871 to 306
Calculation steps:
[( 306 - 871 ) ÷ 871] x 100 = -64.87%
Formula
Percentage change = [(306 - 871) / 871] x 100
Subtract the new number by the original number
306 - 871 = -565
-565 ÷ 871 = -0.6486796785304249
-0.6486796785304249 x 100 = -64.87%