-79.84% is the change from 253 to 51
Calculation steps:
[( 51 - 253 ) ÷ 253] x 100 = -79.84%
Formula
Percentage change = [(51 - 253) / 253] x 100
Subtract the new number by the original number
51 - 253 = -202
-202 ÷ 253 = -0.7984189723320159
-0.7984189723320159 x 100 = -79.84%