-91.89% is the change from 555 to 45
Calculation steps:
[( 45 - 555 ) ÷ 555] x 100 = -91.89%
Formula
Percentage change = [(45 - 555) / 555] x 100
Subtract the new number by the original number
45 - 555 = -510
-510 ÷ 555 = -0.918918918918919
-0.918918918918919 x 100 = -91.89%