-75.37% is the change from 674 to 166
Calculation steps:
[( 166 - 674 ) ÷ 674] x 100 = -75.37%
Formula
Percentage change = [(166 - 674) / 674] x 100
Subtract the new number by the original number
166 - 674 = -508
-508 ÷ 674 = -0.7537091988130564
-0.7537091988130564 x 100 = -75.37%