-63.11% is the change from 450 to 166
Calculation steps:
[( 166 - 450 ) ÷ 450] x 100 = -63.11%
Formula
Percentage change = [(166 - 450) / 450] x 100
Subtract the new number by the original number
166 - 450 = -284
-284 ÷ 450 = -0.6311111111111111
-0.6311111111111111 x 100 = -63.11%