-54.21% is the change from 677 to 310
Calculation steps:
[( 310 - 677 ) ÷ 677] x 100 = -54.21%
Formula
Percentage change = [(310 - 677) / 677] x 100
Subtract the new number by the original number
310 - 677 = -367
-367 ÷ 677 = -0.5420974889217134
-0.5420974889217134 x 100 = -54.21%