-19.12% is the change from 978 to 791
Calculation steps:
[( 791 - 978 ) ÷ 978] x 100 = -19.12%
Formula
Percentage change = [(791 - 978) / 978] x 100
Subtract the new number by the original number
791 - 978 = -187
-187 ÷ 978 = -0.19120654396728015
-0.19120654396728015 x 100 = -19.12%