-74.7% is the change from 676 to 171
Calculation steps:
[( 171 - 676 ) ÷ 676] x 100 = -74.7%
Formula
Percentage change = [(171 - 676) / 676] x 100
Subtract the new number by the original number
171 - 676 = -505
-505 ÷ 676 = -0.7470414201183432
-0.7470414201183432 x 100 = -74.7%