-67.28% is the change from 657 to 215
Calculation steps:
[( 215 - 657 ) ÷ 657] x 100 = -67.28%
Formula
Percentage change = [(215 - 657) / 657] x 100
Subtract the new number by the original number
215 - 657 = -442
-442 ÷ 657 = -0.6727549467275494
-0.6727549467275494 x 100 = -67.28%