-18.91% is the change from 312 to 253
Calculation steps:
[( 253 - 312 ) ÷ 312] x 100 = -18.91%
Formula
Percentage change = [(253 - 312) / 312] x 100
Subtract the new number by the original number
253 - 312 = -59
-59 ÷ 312 = -0.1891025641025641
-0.1891025641025641 x 100 = -18.91%