-38.75% is the change from 991 to 607
Calculation steps:
[( 607 - 991 ) ÷ 991] x 100 = -38.75%
Formula
Percentage change = [(607 - 991) / 991] x 100
Subtract the new number by the original number
607 - 991 = -384
-384 ÷ 991 = -0.3874873864783047
-0.3874873864783047 x 100 = -38.75%