-45.21% is the change from 303 to 166
Calculation steps:
[( 166 - 303 ) ÷ 303] x 100 = -45.21%
Formula
Percentage change = [(166 - 303) / 303] x 100
Subtract the new number by the original number
166 - 303 = -137
-137 ÷ 303 = -0.4521452145214521
-0.4521452145214521 x 100 = -45.21%