-85.85% is the change from 318 to 45
Calculation steps:
[( 45 - 318 ) ÷ 318] x 100 = -85.85%
Formula
Percentage change = [(45 - 318) / 318] x 100
Subtract the new number by the original number
45 - 318 = -273
-273 ÷ 318 = -0.8584905660377359
-0.8584905660377359 x 100 = -85.85%