-66.82% is the change from 657 to 218
Calculation steps:
[( 218 - 657 ) ÷ 657] x 100 = -66.82%
Formula
Percentage change = [(218 - 657) / 657] x 100
Subtract the new number by the original number
218 - 657 = -439
-439 ÷ 657 = -0.6681887366818874
-0.6681887366818874 x 100 = -66.82%