-31.44% is the change from 897 to 615
Calculation steps:
[( 615 - 897 ) ÷ 897] x 100 = -31.44%
Formula
Percentage change = [(615 - 897) / 897] x 100
Subtract the new number by the original number
615 - 897 = -282
-282 ÷ 897 = -0.31438127090301005
-0.31438127090301005 x 100 = -31.44%