-52% is the change from 550 to 264
Calculation steps:
[( 264 - 550 ) ÷ 550] x 100 = -52%
Formula
Percentage change = [(264 - 550) / 550] x 100
Subtract the new number by the original number
264 - 550 = -286
-286 ÷ 550 = -0.52
-0.52 x 100 = -52%
Example