-66.35% is the change from 211 to 71
Calculation steps:
[( 71 - 211 ) ÷ 211] x 100 = -66.35%
Formula
Percentage change = [(71 - 211) / 211] x 100
Subtract the new number by the original number
71 - 211 = -140
-140 ÷ 211 = -0.6635071090047393
-0.6635071090047393 x 100 = -66.35%