-32.69% is the change from 988 to 665
Calculation steps:
[( 665 - 988 ) ÷ 988] x 100 = -32.69%
Formula
Percentage change = [(665 - 988) / 988] x 100
Subtract the new number by the original number
665 - 988 = -323
-323 ÷ 988 = -0.3269230769230769
-0.3269230769230769 x 100 = -32.69%