-99.7% is the change from 988 to 3
Calculation steps:
[( 3 - 988 ) ÷ 988] x 100 = -99.7%
Formula
Percentage change = [(3 - 988) / 988] x 100
Subtract the new number by the original number
3 - 988 = -985
-985 ÷ 988 = -0.9969635627530364
-0.9969635627530364 x 100 = -99.7%