-75.3% is the change from 672 to 166
Calculation steps:
[( 166 - 672 ) ÷ 672] x 100 = -75.3%
Formula
Percentage change = [(166 - 672) / 672] x 100
Subtract the new number by the original number
166 - 672 = -506
-506 ÷ 672 = -0.7529761904761905
-0.7529761904761905 x 100 = -75.3%