-63.49% is the change from 671 to 245
Calculation steps:
[( 245 - 671 ) ÷ 671] x 100 = -63.49%
Formula
Percentage change = [(245 - 671) / 671] x 100
Subtract the new number by the original number
245 - 671 = -426
-426 ÷ 671 = -0.6348733233979136
-0.6348733233979136 x 100 = -63.49%