-67.05% is the change from 956 to 315
Calculation steps:
[( 315 - 956 ) ÷ 956] x 100 = -67.05%
Formula
Percentage change = [(315 - 956) / 956] x 100
Subtract the new number by the original number
315 - 956 = -641
-641 ÷ 956 = -0.6705020920502092
-0.6705020920502092 x 100 = -67.05%