-67.86% is the change from 980 to 315
Calculation steps:
[( 315 - 980 ) ÷ 980] x 100 = -67.86%
Formula
Percentage change = [(315 - 980) / 980] x 100
Subtract the new number by the original number
315 - 980 = -665
-665 ÷ 980 = -0.6785714285714286
-0.6785714285714286 x 100 = -67.86%