-60.85% is the change from 991 to 388
Calculation steps:
[( 388 - 991 ) ÷ 991] x 100 = -60.85%
Formula
Percentage change = [(388 - 991) / 991] x 100
Subtract the new number by the original number
388 - 991 = -603
-603 ÷ 991 = -0.6084762865792129
-0.6084762865792129 x 100 = -60.85%