-78.24% is the change from 786 to 171
Calculation steps:
[( 171 - 786 ) ÷ 786] x 100 = -78.24%
Formula
Percentage change = [(171 - 786) / 786] x 100
Subtract the new number by the original number
171 - 786 = -615
-615 ÷ 786 = -0.7824427480916031
-0.7824427480916031 x 100 = -78.24%