-32.12% is the change from 987 to 670
Calculation steps:
[( 670 - 987 ) ÷ 987] x 100 = -32.12%
Formula
Percentage change = [(670 - 987) / 987] x 100
Subtract the new number by the original number
670 - 987 = -317
-317 ÷ 987 = -0.3211752786220871
-0.3211752786220871 x 100 = -32.12%