-75.25% is the change from 687 to 170
Calculation steps:
[( 170 - 687 ) ÷ 687] x 100 = -75.25%
Formula
Percentage change = [(170 - 687) / 687] x 100
Subtract the new number by the original number
170 - 687 = -517
-517 ÷ 687 = -0.75254730713246
-0.75254730713246 x 100 = -75.25%