-67.51% is the change from 277 to 90
Calculation steps:
[( 90 - 277 ) ÷ 277] x 100 = -67.51%
Formula
Percentage change = [(90 - 277) / 277] x 100
Subtract the new number by the original number
90 - 277 = -187
-187 ÷ 277 = -0.6750902527075813
-0.6750902527075813 x 100 = -67.51%