-18.5% is the change from 957 to 780
Calculation steps:
[( 780 - 957 ) ÷ 957] x 100 = -18.5%
Formula
Percentage change = [(780 - 957) / 957] x 100
Subtract the new number by the original number
780 - 957 = -177
-177 ÷ 957 = -0.18495297805642633
-0.18495297805642633 x 100 = -18.5%